Description
Filter Box for Citroën C4 Picasso, C5 X7, C8 and Peugeot 308, 3008, RCZ, DS5 with 2.0 HDi engine
This replacement filter box (air intake/air filter housing) is designed for a range of Stellantis diesel models with the 2.0 HDi engine. It houses the engine air filter, secures the Mass Air Flow (MAF) sensor and intake ducts, and ensures clean, metered air reaches the engine for optimal combustion. Supplied to fit original equipment part numbers, this unit is a direct-fit solution for mechanics and experienced DIY enthusiasts who need a reliable, OEM-compatible airbox.
Features And Benefits
– Direct fit for specified Citroën and Peugeot models — reduces installation time compared with universal solutions.
– Maintains correct air routing and MAF sensor positioning to avoid air leaks and inaccurate sensor readings.
– Helps reduce intake noise and protects the air filter from debris and water ingress.
– Supplied with the referenced OEM numbers to simplify parts lookup and ordering.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Models: Citroën C4 Picasso, Citroën C5 X7, Citroën C8, Peugeot 308, Peugeot 3008 (I), Peugeot RCZ, Peugeot DS5
- Product Codes: 9653388980, 9657982380, 1420Q2
- Other Numbers: 9657982380, 1420Q2
- Engine: Primarily 2.0 HDi diesel applications (confirm with part numbers for specific sub‑variants)
Installation Recommendations
- Work With The Engine Cold And Parked On A Level Surface. Remove Intake Ducts And Clamps Securing The Airbox.
- Disconnect The MAF Sensor Electrical Connector Carefully Before Removing The Airbox. Handle The Sensor And Seals Gently To Avoid Damage.
- Unclip Or Unscrew Fasteners Holding The Housing; Remove The Old Box Along With Any Retained Gaskets Or Seals.
- Install The New Filter Box Ensuring All Sealing Surfaces And Gaskets Are Clean And Correctly Seated. Refit The MAF Sensor, Intake Ducts And Clamps, Then Test For Air Leaks.
- Replace The Engine Air Filter When Replacing The Housing; Inspect Hoses And Clamps For Wear And Replace As Needed.
Why This Part Fails Most Often
Airbox housings are generally durable but commonly fail due to plastic fatigue, heat aging and mechanical stress from repeated engine bay temperature cycles. Common causes include cracking at clip points or mounting bosses, damage from impact (e.g., road debris), deterioration of seals that lead to unmetered air leaks, and oil contamination causing softening of plastic. Symptoms of a failing airbox include rattling or whistling noises from the intake, poor idle quality, reduced engine performance, and diagnostic trouble codes related to air flow or mixture when the MAF reads inconsistent values.
Practical Tips For Mechanics And DIYers
- Always Fit New Seals Or Gaskets If The Old Ones Show Any Deformation — A Small Air Leak Can Trigger A Fault Code.
- Check The MAF Sensor For Contamination; Clean Or Replace If Readings Are Erratic After Installing The New Box.
- Keep The OEM Part Numbers (9653388980 / 9657982380 / 1420Q2) Handy When Ordering Related Components Like Clamps, Hoses Or Replacement Filters.
- Inspect Adjacent Components (Intake Ducts, Turbo Inlet, Vacuum Hoses) While The Airbox Is Removed To Avoid Rework.
Compatibility And Ordering
This filter box is intended to match the listed OE part numbers and fit the models and engine family specified above. Use the product codes in the Technical Information section to confirm fitment against your vehicle’s parts documentation or service manuals before ordering.
